Expansion of log(1+sinh(log(1+x))).

Terms

a(0) =0a(1) =1a(2) =-2a(3) =8a(4) =-45a(5) =324a(6) =-2850a(7) =29700a(8) =-358470a(9) =4924080a(10) =-75909960a(11) =1298430000a(12) =-24410370600a(13) =500392015200